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 * PEM festival
  * 01/14(Tue) 9:00-15:00
   * Evaluate the scattered light for payload (with CRY team) [[http://klog.icrr.u-tokyo.ac.jp/osl/?r=12293]]
  * 01/15(Wed) (Maybe expanded)
   * Turned off almost all FFUs and vacuum pumps		   * Turning off the instruments
  * Many microphone in the PSL room
Line 49: Line 45:
 * Newtonian noise measurement
  * Thank you for Virgo PEM member!
  * Francesca mainly measured the newtonian noise
  * We will discuss in 21st. Jan.(Virgo KAGRA PEM meeting)

 * PEM measurement
  * Someday : Effect of the sound to DARM displacement
  * Someday : Environmental check around BS (including the POP)
  * Someday : Evaluation of the table cover
  * Someday : SR2 and SR3 optical lever (Reflection light from SRM?)
Line 64: Line 49:
  * IX. IY microphone
  * Instrument switch off

Weekly PEM meeting

  • 2020/01/28(Tue) 16:00-(JST)
  • Regular meeting meeting (Japanese)

  • Web meeting with Zoom2 (Zoom2)

Agenda

General issue

  • Interferometer status
    • Finally, we can lock the PRFPMI
      • Transmittance laser power became 100 times higher than FPMI
      • Lock duration is about 30min at maximum
    • OMC commissioning is also ongoing

    • ~100Hz noise and line noise of the higher frequency -> PEM

  • New PEMs
    • We bought the ACO power supply, microphone and accelerometers(end of Feb.)
    • Basically the portable PEMs
  • PEM plan
    • PEM injection to optical table
    • Hammering test
    • Long term PEM evaluation
    • Turning off the instruments
    • Many microphone in the PSL room
  • Conference
  • PEM injection
    • Shaker injection1 (TTanaka, Yokozawa)
    • acoustic injection (TTanaka, Yokozawa)
      • PSL, REFL and AS table injection
      • Analysis is ongoing
    • magnetic field injection (Niigata Tanaka, Fujikawa, Yokozawa)
      • Effect of the air cooler magnetic field
      • AS, REFL table injection
      • He is writing the thesis

Each progress

  • Yokozawa
    • Planning toward the O3 run
    • IX. IY microphone
    • Instrument switch off
  • Washimi

    • Preparation for the hammering test @ Y-end klog

    • Sound reverberation study (KAGRA & Virgo)

  • Kozakai
    • Offline detchar report for the part of the PEM
  • TTanaka(ICRR)
  • Fujikawa
    • Lock loss study2
    • fujimopy
  • TTanaka(Niigata)
    • Magnetic field from air cooler and compressor
    • Magnetic field injection to AS and REFL table
  • etc

KAGRA/Subgroups/PEM/Meeting/200128/Agenda (last edited 2020-01-28 13:59:39 by chihiro.kozakai)